Clean It Up

UK Window Cleaning Forum => Window Cleaning Forum => Topic started by: ben M on May 05, 2013, 06:36:08 pm

Title: membrane RO 4040
Post by: ben M on May 05, 2013, 06:36:08 pm

new pre filters, tds 025 after RO 4040, do i have to change my membrane? when do you change it?
thanks

Title: Re: membrane RO 4040
Post by: Lee GLS on May 05, 2013, 06:46:17 pm

Pre filters will not effect the tds, only the prediction speed. You change your membrane when you feel you are spending too much on resin.

Title: Re: membrane RO 4040
Post by: ben M on May 05, 2013, 07:04:53 pm

Thanks Lee.My tds went up from 10 to 25 in 3 months time  :( Is it normal? Did i do something wrong? thanks